diff options
| author | Gustavo Frederico Temple Pedrosa <gustavo.pedrosa@eldorado.org.br> | 2014-11-25 15:41:15 +0000 |
|---|---|---|
| committer | Remi Collet <remi@php.net> | 2014-12-01 10:55:53 +0100 |
| commit | 87e0802a997001954603e64ca3987080b50afb21 (patch) | |
| tree | a3a38fdbfa74de52eda34de5b75b1711789f66ad | |
| parent | d04685732ec315d1b4e2df1883bdfef7ed2c1dbe (diff) | |
| download | php-git-87e0802a997001954603e64ca3987080b50afb21.tar.gz | |
PowerPC64 support in long multiplication
In long integer multiplications, avoid casting
both operands to long double and use an inline
assembly-based overflow checking function instead.
| -rw-r--r-- | Zend/zend_multiply.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/Zend/zend_multiply.h b/Zend/zend_multiply.h index 6dce8fb6ac..ab5fd6279d 100644 --- a/Zend/zend_multiply.h +++ b/Zend/zend_multiply.h @@ -84,6 +84,24 @@ } \ } while (0) +#elif defined(__powerpc64__) && defined(__GNUC__) + +#define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do { \ + long __tmpvar; \ + __asm__("li 14, 0\n\t" \ + "mtxer 14\n\t" \ + "mulldo. %0, %2,%3\n\t" \ + "xor %1, %1, %1\n\t" \ + "bns+ 0f\n\t" \ + "li %1, 1\n\t" \ + "0:\n" \ + : "=r"(__tmpvar),"=r"(usedval) \ + : "r"(a), "r"(b) \ + : "r14", "cc"); \ + if (usedval) (dval) = (double) (a) * (double) (b); \ + else (lval) = __tmpvar; \ +} while (0) + #elif SIZEOF_ZEND_LONG == 4 #define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do { \ |